Liquid ring pump



FIG. 1 is a perspective view of a liquid ring pump showing a first embodiment of our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an elevational view of the opposite side thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is an elevational view of the opposite end thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a side elevational view of a second embodiment thereof;

FIG. 9 is an elevational view of the opposite side of the embodiment of FIG. 8;

FIG. 10 is an end elevational view of the embodiment of FIG. 8;

FIG. 11 is an elevational view of the opposite end of the embodiment of FIG. 8;

FIG. 12 is a top plan view of the embodiment of FIG. 8; and,

FIG. 13 is a bottom plan view of the embodiment of FIG. 8. 

The ornamental design for a liquid ring pump, as shown and described. 